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AC Motor Control
AC Product Range
THYROMAT - BDH & BH
Digital and Analogue Hoist Controller for Slipring motors
THYROMAT - BDT & BT
Digital and Analogue Travel Controller for Slipring motors
THYROMAT - BDW & BW
Digital and Analogue Winder Controller for Slipring motors
Variable Frequency Converters
THYROMAT - BDH & BH / BDT & BT
THYROMAT is a robust, reliable digital crane control unit that delivers leading thyristor technology to control crane hoist and travel motions, using slip ring motors.THYROMAT units are designed specifically to operate in extreme enviromments where continuous operation is critical. THYROMAT solid state electronics allows a compact design , engineered to meet the requirements of new and existing cranes.
Product Advantages
- Excellent Reliability
- Increased production
- Simple quick installation
- Minimal maintenance
- Rotor feedback speed measurement
- Reversing Contactors
- Easily repaired - quick return to service
- Improved Safety
- Smooth Steady Control
- User friendly
- Large Product range
Technical Features - Product environment
- Digital and keypad interface
- Extreme ambient temperature - 60° in harsh operating environment
- Robust mechanical construction
- Self Diagnostics with built in watchdog
- Torque proving and integral brake control
DC Motor Control
MH Automation DC motor control range is a simple, cost effective solution for replacement of obsolete DC contactor control in high production cranes using series or shunt wound machines. These products significantly improve reliability and reduce overall maintenance costs.
Product Range
LMC™ Crane Controls
Solid State Digital Variable speed drive for Series and Compound DC motors
CONVERTERS
AC-DC Digital Variable Speed Series Motor Controller
THYROMAT D
AC-DC Analogue Variable Speed Series Motor Controller
LMC Crane Controls
LMC™ Crane Controls by Cableform Inc
Retrofits & New Installation
Hoist Controls for up to 500HP Hoist Motors
Solid-State IGBT Control of series-wound DC hoist motors delivers high torque at startup, adjustable speed points and acceleration / deceleration ramps, electric braking and elimination of all contactor problems
Easy Retrofit Installations
- Connect existing power cables
- Connect existing motor cables
- Connect existing brake cables
- Connect existing operator controls
- Fine-tune pre-set acceleration ramps, speed points and braking
Save Energy Costs
Motor energy consumption reduced by 66.5% plus torque boost at startup is 7 amps in the motor for every 1 amp drawn from the power source-motors work easier and last longer
Save Maintenance Costs
Solid-state construction, no wear components plus microprocessor control of contactors means contactors never make or break a load with Microprocessor Logic, 5-speed card & IGBT’s
LMC Hoist Control Technology Eliminates problems caused by
- Brownouts and discontinuity of the power supply
- Substantial negative ring of supply voltages
- Positive-going transients caused by switching off other machines
Patented Hoist Control
- True series motor hoist circuit-
- True shunt motor lowering circuit
- Emergency Brake Contactor
- Upper Limit Switch Coordination
- DB Circuit IGBT Switch + Parallel Contactor
Additional Benefits
- Open architecture panel design
- All components easily accessible
- Multiple operator control choices
- Fault register for easy troubleshooting
- Hand-held data terminal for setup, changes in setup and diagnostics
- Works with Series Brakes and/or Shunt Brakes-specify when ordering
- Duplex & quadruplex available
Typical Specifications:
- Voltage: 230 VDC Nominal, 460VDC Max, 120 VDC min
- DC Mill Motor Frame: 602, 802 through 622,822
- Ambient Operating Temperature: +50°C Maximum to -10°C Minimum
- High ambient drives available: +60°C Maximum to -10°C Minimum
- Diagnostics & Parameter Adjustment: Data Terminal, Part No. A62499
- DB Resistor: required but not included, reuse existing units in good condition
THYROMAT D
AC-DC Analogue Variable Speed Series Motor Controller
Brake Control
MH Automation has a range of specific electronic thyristor control equipment which provides solutions to control problems that are found in their particular fields of application.These controllers form the nucleus of various types of automated systems which in the most part are standardized systems although specific systems can easily be accommodated.
BRAKOMAT
AC-DC Shunt Brake Controller
BRAKOMAT
The BRAKOMAT D brake control unit is intended to control the DC brake of a hoist or travel motion on overhead cranes and other similar type equipment . It is particularly suited to heavy duty and continous type operations in harsh environments.
Where combined on a hoist or travel motion that has THYROMAT B crane control , the two units compliment each other and provide a total solution.
Benefits
- Ideal for control of old SM type DC brakes
- Eliminates the need for a combined rectifier and quick release relay panel
- No more difficult setting up procedures
- Very simple installation
- Greatly reduced mechanical and electrical maintenance
- High degree of safety and reliability
- High immunity against mains disturbances
- Process is fully solid state and requires no contactors or economising resistor
Magnet Control
Product Range
MAGNAMAT
AC-DC Magnet Controller
OPTIMIZER
DC-DC Solid State Magnet Controller
Magnamat
The Digital Magnamat consists of two back to back fully controlled Thyristor rectifier bridges. One of the bridges is used to supply the lifting current and the other bridge to provide the demagnetizing dropping current.Both bridges are also used to return the stored energy in the magnet back to the mains. The system is suitable for any magnet voltage up to a maximum of 440 V DC.
The product in its present form offers the possibility of four different magnet applications being called up.For every application a dedicated set of parameters is available to meet the specific requirements of the relevant application.
Benefits
- Excellent reliability due to robust, vibration resistant mechanical construction
- DC Contactors are eliminated
- Low maintenance and reduced operating costs
- User friendly contol panel and keyboard control interface
- No additional rectifiers are required
- Significant space savings due to compact dimensions
- Energy returned to network therefore improved efficiency
- Demagnetising voltage is automatically supplied allowing for quick release of product
Product Range
32A Digital Magnamat – 220V ac
32A Digital Magnamat – 460V ac
60A Digital Magnamat – 220V ac
60A Digital Magnamat – 460V ac
100A Digital Magnamat – 220V ac
100A Digital Magnamat – 460V ac
140A Digital Magnamat – 220V ac
140A Digital Magnamat – 460 V ac
240A Digital Magnamat – 220V ac
240A Digital Magnamat – 460V ac
Accessories
Snubber network card
Magnamat Phase Shifter card – 220 V
Magnamat Phase Shifter card – 460 V
Magnamat Reverse Card
Magnamat Digital Control Card
Magnamat Digital Control Panel
Optimizer
DC-DC Solid State IGBT Magnet Control
Infinitely variable current control for all lifting magnets. Magnets operate at the lowest possible temperature. Adjustable current and times for all operating modes to maximise performance,optimise production and prolong magnet life.
Benefits
Improved production
- Reduced drop time
- Reduced cleaning time
- Fewer magnet change outs
- Adjustable dribble time
- Improved lift capacity throughout the shift
Energy Efficient
- Reduced power consumption
- Reduced magnet temperature
- Voltage Spikes eliminated - protects the entire crane electrical system
Additional benefits
- No contactors
- Less maintenance
- Use existing magnet
- Use existing connections
- Solid State construction - no moving parts
- Use existing DC power supply
- Use existing operator controls
- Eliminates need for dual voltage magnet controls
Optimizer Magnet Control
Joysticks
Single and Two Axis Sensor Controllers,designed and built for AC & DC Cranes
Electrical Options:
- Contacts AC and DC rated
- Switching sequence to suit all circuit diagrams
- Potentiometers
- Programmable encoder
- Bus Interface
- Wired to plug/socket
Mechanical Options:
- Spring return or Stay Put Digital and Proportional Outputs
- From 1-0-1 up to 5-0-5 steps or stepless for proportional operation
- Open cross or special shaped gate
- Contact drives positioned to suit space available
- Purpose built enclosures
Programmable logic controllers (PLC)
Digital computers designed for multIple input and output arrangements with extended temperature ranges, immunity to electrical noise and resistance to vibration.
Human Machine Interface (HMI) Technology
Hardware and software components that allow interactive Real Time information on Crane Movements.
Benefits
- Information in Real Time for Crane Movement
- Fault detection and historical logs
- Crane Production
- Drive Trends
- Historical Data
- Alarms and Fault Reports
Supervisory control and data acquisition (SCADA)
Centralised systems which monitor the overall performance of the RTU or PLC controllers.